Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc8efde61d0a3a9…

MALICIOUS

PDF

41.7 KB Created: 2020-10-25 03:40:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 5d82e33fa90eff26c2fad67f703f2ba9 SHA-1: 6b51e357fefedd3e75e372c45c9d9be2058c613e SHA-256: 1dc8efde61d0a3a976399bf46827db230831917f0cf4588a5e19cedf91991f3e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/wb?keyword=sistem%20peredaran%20darah%20jantung%20pdf In PDF document text
    • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/bakesu-dugemogaxemif-mudunuk.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/3067330.pdfIn PDF document text
    • https://wanezetisozol.weebly.com/uploads/1/3/4/4/134468493/7516775.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/divagu-dapuwomisan-ruzoxodupakel-gakukutigodedel.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/vifotatilaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_5f8c8fb88c585.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f8db1c8a5954.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382780/normal_5f93f6f5e471f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5f87623810069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392462/normal_5f91ddc6ccc1f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9191/3624/files/filumagoruxamaser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/long_tail_risk_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/pathfinder_roleplaying_game_advanced_players_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7422/3269/files/xizonodadasanut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1916/0736/files/cancion_santo_santo_santo_dicen_los_querubines_letra.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/angiology_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/zakofowagigele.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/64801806154.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/kibatejejuri.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/27158172543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aec5cad-f431-4a1e-88b0-475974f4232d/jolly_llb_full_movie_download_480p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10143ef-70da-4ef1-8ce7-f059684cf5b3/siwologinarupi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d824422-a47b-45c4-9469-4d8c9767b295/64115816857.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89f11700-a0be-4f50-b602-fa87a7bd5f0c/50235846405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9ef8f7e-5cdf-4c62-8808-da652e601134/tederorulonumuterila.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000644b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644B 5604 bytes
SHA-256: 1f1ee8e16a5ef506f839109b2bf0fd78a02ebb9d62315e76c5ffab41ba716020
font_01_sfnt_off00007733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7733 10116 bytes
SHA-256: 4d18a8ea4d4c74bbce07be8a70a58847e41bd00dc5314369e768ec5077275ae4